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Yakvenalex [24]
3 years ago
15

Which is a possible expression for the series

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
4 0
Without considering the sign:

It's sigma(1 to 5, 5k+2)

Since the first item is minus, you simply add (-1)^k

So it's sigma(1 to 5, (-1)^k * (5k+2)

I choose A
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===================================================

Work Shown:

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